Sonic Compilation is a video game compilation released in 1995 for the Sega Mega Drive. It contains three previously released Sonic titles:
Sonic the Hedgehog Sonic the Hedgehog 2 Dr. Robotnik's Mean Bean Machine
In 1997, the Genesis version was released in North America under the name Sonic Classics 3 in 1 (making it the final Sonic game released for the console). Sonic Compilation was the first collection of multiple Sonic games on one cartridge. In some locations, it was bundled with the Mega Drive console during its later years. The three games appear in exactly the same form as in their original release. The only new content is a game selection menu, controlled by using the left and right directions on the D-pad and new sprite renderings of the box art for each of the three games. The menu was changed in later released versions. Once a game is selected, players are not able to go back to the menu unless the console is reset or turned off and on again. This game is one of two that, when "locked on" with Sonic & Knuckles, will enable players to play the entire Blue Sphere game, instead of just one level. The other game that enables this is the standalone version of Sonic the Hedgehog.